[PATCH v4 3/3] drm/amd/display: Switch to using atomic_helper for flip.

[Andrey Grodzovsky <Andrey.Grodzovsky-5C7GfCeVMHo@public.gmane.org>]

v2:
Modify for movig pflip flags to crtc_state

v4:
Fix identation.

Change-Id: I25dae6d8c29de5d022a42aa99a18a32674b56cda
Signed-off-by: Andrey Grodzovsky <Andrey.Grodzovsky@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h           |   1 -
 .../drm/amd/display/amdgpu_dm/amdgpu_dm_types.c    | 113 +++++----------------
 2 files changed, 24 insertions(+), 90 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
index 4c0a86e..3ff3c14 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_mode.h
@@ -443,7 +443,6 @@ struct amdgpu_crtc {
 	enum amdgpu_interrupt_state vsync_timer_enabled;
 
 	int otg_inst;
-	uint32_t flip_flags;
 	/* After Set Mode target will be non-NULL */
 	struct dc_target *target;
 };
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
index a443b70..78f65ba 100644
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_types.c
@@ -1060,83 +1060,6 @@ static int dm_crtc_funcs_atomic_set_property(
 	return 0;
 }
 
-
-static int amdgpu_atomic_helper_page_flip(struct drm_crtc *crtc,
-				struct drm_framebuffer *fb,
-				struct drm_pending_vblank_event *event,
-				uint32_t flags)
-{
-	struct drm_plane *plane = crtc->primary;
-	struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
-	struct drm_atomic_state *state;
-	struct drm_plane_state *plane_state;
-	struct drm_crtc_state *crtc_state;
-	int ret = 0;
-
-	state = drm_atomic_state_alloc(plane->dev);
-	if (!state)
-		return -ENOMEM;
-
-	ret = drm_crtc_vblank_get(crtc);
-	if (ret)
-		return ret;
-
-	state->acquire_ctx = drm_modeset_legacy_acquire_ctx(crtc);
-retry:
-	crtc_state = drm_atomic_get_crtc_state(state, crtc);
-	if (IS_ERR(crtc_state)) {
-		ret = PTR_ERR(crtc_state);
-		goto fail;
-	}
-	crtc_state->event = event;
-
-	plane_state = drm_atomic_get_plane_state(state, plane);
-	if (IS_ERR(plane_state)) {
-		ret = PTR_ERR(plane_state);
-		goto fail;
-	}
-
-	ret = drm_atomic_set_crtc_for_plane(plane_state, crtc);
-	if (ret != 0)
-		goto fail;
-	drm_atomic_set_fb_for_plane(plane_state, fb);
-
-	/* Make sure we don't accidentally do a full modeset. */
-	state->allow_modeset = false;
-	if (!crtc_state->active) {
-		DRM_DEBUG_ATOMIC("[CRTC:%d] disabled, rejecting legacy flip\n",
-				 crtc->base.id);
-		ret = -EINVAL;
-		goto fail;
-	}
-	acrtc->flip_flags = flags;
-
-	ret = drm_atomic_nonblocking_commit(state);
-
-fail:
-	if (ret == -EDEADLK)
-		goto backoff;
-
-	if (ret)
-		drm_crtc_vblank_put(crtc);
-
-	drm_atomic_state_put(state);
-
-	return ret;
-backoff:
-	drm_atomic_state_clear(state);
-	drm_atomic_legacy_backoff(state);
-
-	/*
-	 * Someone might have exchanged the framebuffer while we dropped locks
-	 * in the backoff code. We need to fix up the fb refcount tracking the
-	 * core does for us.
-	 */
-	plane->old_fb = plane->fb;
-
-	goto retry;
-}
-
 /* Implemented only the options currently availible for the driver */
 static const struct drm_crtc_funcs amdgpu_dm_crtc_funcs = {
 	.reset = drm_atomic_helper_crtc_reset,
@@ -1145,7 +1068,7 @@ static int amdgpu_atomic_helper_page_flip(struct drm_crtc *crtc,
 	.destroy = amdgpu_dm_crtc_destroy,
 	.gamma_set = amdgpu_dm_atomic_crtc_gamma_set,
 	.set_config = drm_atomic_helper_set_config,
-	.page_flip = amdgpu_atomic_helper_page_flip,
+	.page_flip_target = drm_atomic_helper_page_flip_target,
 	.atomic_duplicate_state = drm_atomic_helper_crtc_duplicate_state,
 	.atomic_destroy_state = drm_atomic_helper_crtc_destroy_state,
 	.atomic_set_property = dm_crtc_funcs_atomic_set_property
@@ -1626,7 +1549,8 @@ static void clear_unrelated_fields(struct drm_plane_state *state)
 static bool page_flip_needed(
 	const struct drm_plane_state *new_state,
 	const struct drm_plane_state *old_state,
-	bool commit_surface_required)
+	bool commit_surface_required,
+	uint32_t pflip_flags)
 {
 	struct drm_plane_state old_state_tmp;
 	struct drm_plane_state new_state_tmp;
@@ -1679,7 +1603,7 @@ static bool page_flip_needed(
 				    sizeof(old_state_tmp)) == 0 ? true:false;
 	if (new_state->crtc && page_flip_required == false) {
 		acrtc_new = to_amdgpu_crtc(new_state->crtc);
-		if (acrtc_new->flip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
+		if (pflip_flags & DRM_MODE_PAGE_FLIP_ASYNC)
 			page_flip_required = true;
 	}
 	return page_flip_required;
@@ -2696,7 +2620,11 @@ int amdgpu_dm_atomic_commit(
 		 * 1. This commit is not a page flip.
 		 * 2. This commit is a page flip, and targets are created.
 		 */
-		if (!page_flip_needed(plane_state, old_plane_state, true) ||
+		if (!page_flip_needed(plane_state,
+				      old_plane_state,
+				      true,
+				      crtc->state->pflip_flags)
+				||
 				action == DM_COMMIT_ACTION_DPMS_ON ||
 				action == DM_COMMIT_ACTION_SET) {
 			list_for_each_entry(connector,
@@ -2760,21 +2688,24 @@ int amdgpu_dm_atomic_commit(
 	for_each_plane_in_state(state, plane, old_plane_state, i) {
 		struct drm_plane_state *plane_state = plane->state;
 		struct drm_crtc *crtc = plane_state->crtc;
-		struct amdgpu_crtc *acrtc = to_amdgpu_crtc(crtc);
 		struct drm_framebuffer *fb = plane_state->fb;
+		uint32_t pflip_flags;
 
 		if (!fb || !crtc || !crtc->state->planes_changed ||
 			!crtc->state->active)
 			continue;
 
-		if (page_flip_needed(plane_state, old_plane_state, false)) {
+		pflip_flags = crtc->state->pflip_flags;
+		if (page_flip_needed(plane_state,
+				     old_plane_state,
+				     false,
+				     pflip_flags)) {
 			ret = amdgpu_crtc_page_flip_target(crtc,
 							   fb,
 							   crtc->state->event,
-							   acrtc->flip_flags,
-							   drm_crtc_vblank_count(crtc));
-			/*clean up the flags for next usage*/
-			acrtc->flip_flags = 0;
+							   crtc->state->pflip_flags,
+							   crtc->state->target_vblank);
+
 			if (ret)
 				break;
 		}
@@ -3138,13 +3069,17 @@ int amdgpu_dm_atomic_check(struct drm_device *dev,
 				continue;
 
 			action = get_dm_commit_action(crtc->state);
+			crtc_state = drm_atomic_get_existing_crtc_state(state, crtc);
 
 			/* Surfaces are created under two scenarios:
 			 * 1. This commit is not a page flip.
 			 * 2. This commit is a page flip, and targets are created.
 			 */
-			if (!page_flip_needed(plane_state, old_plane_state,
-					      true) ||
+			if (!page_flip_needed(plane_state,
+					      old_plane_state,
+					      true,
+					      crtc_state->pflip_flags)
+					||
 					action == DM_COMMIT_ACTION_DPMS_ON ||
 					action == DM_COMMIT_ACTION_SET) {
 				struct dc_surface *surface;
-- 
1.9.1

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